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Merge pull request #4062 from ethereum/revert-variable

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Fix revert with reason coming from a string variable
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chriseth 2018-05-15 14:44:39 +02:00 committed by GitHub
commit dce6224052
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4 changed files with 45 additions and 2 deletions
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2
Changelog.md
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@ -15,10 +15,10 @@ Features:
* Type Checker: Warn about wildcard tuple assignments (this will turn into an error with version 0.5.0).
Bugfixes:
* Code Generator: Fix ``revert`` with reason coming from a state or local string variable.
* Type Checker: Show proper error when trying to ``emit`` a non-event.
* Type Checker: Warn about empty tuple components (this will turn into an error with version 0.5.0).
### 0.4.23 (2018-04-19)
Features:

1
libsolidity/codegen/CompilerUtils.cpp
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@ -89,7 +89,6 @@ void CompilerUtils::revertWithStringData(Type const& _argumentType)
abiEncode({_argumentType.shared_from_this()}, {make_shared<ArrayType>(DataLocation::Memory, true)});
toSizeAfterFreeMemoryPointer();
m_context << Instruction::REVERT;
m_context.adjustStackOffset(_argumentType.sizeOnStack());
}
unsigned CompilerUtils::loadFromMemory(

4
libsolidity/codegen/ExpressionCompiler.cpp
View File

@ -933,7 +933,11 @@ bool ExpressionCompiler::visit(FunctionCall const& _functionCall)
// condition was not met, flag an error
m_context.appendInvalid();
else if (arguments.size() > 1)
{
utils().revertWithStringData(*arguments.at(1)->annotation().type);
// Here, the argument is consumed, but in the other branch, it is still there.
m_context.adjustStackOffset(arguments.at(1)->annotation().type->sizeOnStack());
}
else
m_context.appendRevert();
// the success branch

40
test/libsolidity/SolidityEndToEndTest.cpp
View File

@ -10660,12 +10660,24 @@ BOOST_AUTO_TEST_CASE(revert_with_cause)
{
char const* sourceCode = R"(
contract D {
string constant msg1 = "test1234567890123456789012345678901234567890";
string msg2 = "test1234567890123456789012345678901234567890";
function f() public {
revert("test123");
}
function g() public {
revert("test1234567890123456789012345678901234567890");
}
function h() public {
revert(msg1);
}
function i() public {
revert(msg2);
}
function j() public {
string memory msg3 = "test1234567890123456789012345678901234567890";
revert(msg3);
}
}
contract C {
D d = new D();
@ -10686,6 +10698,15 @@ BOOST_AUTO_TEST_CASE(revert_with_cause)
function g() public returns (bool, bytes) {
return forward(address(d), msg.data);
}
function h() public returns (bool, bytes) {
return forward(address(d), msg.data);
}
function i() public returns (bool, bytes) {
return forward(address(d), msg.data);
}
function j() public returns (bool, bytes) {
return forward(address(d), msg.data);
}
}
)";
compileAndRun(sourceCode, 0, "C");
@ -10693,6 +10714,9 @@ BOOST_AUTO_TEST_CASE(revert_with_cause)
bytes const errorSignature = bytes{0x08, 0xc3, 0x79, 0xa0};
ABI_CHECK(callContractFunction("f()"), haveReturndata ? encodeArgs(0, 0x40, 0x64) + errorSignature + encodeArgs(0x20, 7, "test123") + bytes(28, 0) : bytes());
ABI_CHECK(callContractFunction("g()"), haveReturndata ? encodeArgs(0, 0x40, 0x84) + errorSignature + encodeArgs(0x20, 44, "test1234567890123456789012345678901234567890") + bytes(28, 0): bytes());
ABI_CHECK(callContractFunction("h()"), haveReturndata ? encodeArgs(0, 0x40, 0x84) + errorSignature + encodeArgs(0x20, 44, "test1234567890123456789012345678901234567890") + bytes(28, 0): bytes());
ABI_CHECK(callContractFunction("i()"), haveReturndata ? encodeArgs(0, 0x40, 0x84) + errorSignature + encodeArgs(0x20, 44, "test1234567890123456789012345678901234567890") + bytes(28, 0): bytes());
ABI_CHECK(callContractFunction("j()"), haveReturndata ? encodeArgs(0, 0x40, 0x84) + errorSignature + encodeArgs(0x20, 44, "test1234567890123456789012345678901234567890") + bytes(28, 0): bytes());
}
BOOST_AUTO_TEST_CASE(require_with_message)
@ -10701,6 +10725,7 @@ BOOST_AUTO_TEST_CASE(require_with_message)
contract D {
bool flag = false;
string storageError = "abc";
string constant constantError = "abc";
function f(uint x) public {
require(x > 7, "failed");
}
@ -10718,6 +10743,13 @@ BOOST_AUTO_TEST_CASE(require_with_message)
function h() public {
require(false, storageError);
}
function i() public {
require(false, constantError);
}
function j() public {
string memory errMsg = "msg";
require(false, errMsg);
}
}
contract C {
D d = new D();
@ -10741,6 +10773,12 @@ BOOST_AUTO_TEST_CASE(require_with_message)
function h() public returns (bool, bytes) {
return forward(address(d), msg.data);
}
function i() public returns (bool, bytes) {
return forward(address(d), msg.data);
}
function j() public returns (bool, bytes) {
return forward(address(d), msg.data);
}
}
)";
compileAndRun(sourceCode, 0, "C");
@ -10751,6 +10789,8 @@ BOOST_AUTO_TEST_CASE(require_with_message)
ABI_CHECK(callContractFunction("g()"), haveReturndata ? encodeArgs(1, 0x40, 0) : bytes());
ABI_CHECK(callContractFunction("g()"), haveReturndata ? encodeArgs(0, 0x40, 0x64) + errorSignature + encodeArgs(0x20, 18, "only on second run") + bytes(28, 0) : bytes());
ABI_CHECK(callContractFunction("h()"), haveReturndata ? encodeArgs(0, 0x40, 0x64) + errorSignature + encodeArgs(0x20, 3, "abc") + bytes(28, 0): bytes());
ABI_CHECK(callContractFunction("i()"), haveReturndata ? encodeArgs(0, 0x40, 0x64) + errorSignature + encodeArgs(0x20, 3, "abc") + bytes(28, 0): bytes());
ABI_CHECK(callContractFunction("j()"), haveReturndata ? encodeArgs(0, 0x40, 0x64) + errorSignature + encodeArgs(0x20, 3, "msg") + bytes(28, 0): bytes());
}
BOOST_AUTO_TEST_CASE(bubble_up_error_messages)